Keg parties on rooftops? Heading to the Housing Office to request being roomed with a friend as a frosh? NYU being less expensive than Yale?

Communal showers?

So not true, say fans, who also happen to have intimate knowledge of the actual university they attend.

While “Gossip Girl” largely nailed the stereotypical aspects of being a wealthy private school kid on the Upper East Side over the last two seasons, it seems to have hit a snag in sending those same kids off to college.

In last Monday’s episode, viewers learned that Blair (Leighton Meester) and Georgina (Michelle Trachtenberg) — now roomies — and Dan (Penn Badgley) and Vanessa (Jessica Szohr), all moved into the same dorm on Fifth Avenue, the fictional “Ehrlich Residence Hall,” which seems to be a thinly-veiled stand-in for real-life Rubin Hall, a freshman-only NYU dorm.

In response to the “Gossip Girl” suggestion that NYU students would turn down Blair’s sushi and saketini party (located in the common room, no less) in favor of the aforementioned rooftop kegger, NYU Local blogger Natan Edelsburg had two things to say:

* “Do you think when the writers wrote this part they were considering the fact that a central memory from every NYU freshman is sake bombing on Bleecker?”

* “Would there really be a rooftop party at Ehrlich Residence Hall? Don’t the writers know that in NYU housing we’re forbidden to peek outside of our windows for the slight chance that we might kill ourselves?”

As for Blair and Georgina’s jumbo-sized dorm room, one NYU Local blogger comments, “I think NYU’s love of money explains the size [of the room]. I would bet that Blair paid NYU to convert a room that originally houses 3-4 people.”

One blog commenter did give the series props though for a reference to “Art & the World,” a class that he says he actually took during his freshman year at Tisch.